Home / 138,102.96-207,157.20-43,331.14

Finding the Fourth Proportional to 138,102.96, 207,157.20 and 43,331.14

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Solution

The fourth proportional to 138,102.96, 207,157.20 and 43,331.14 is: 64,997.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,102.96 : 207,157.20 = 43,331.14 : x
  2. Step 2: Convert to fraction form
    138,102.96/207,157.20 = 43,331.14/x
  3. Step 3: Cross multiply
    138,102.96x = 207,157.20 × 43,331.14
  4. Step 4: Simplify right side
    138,102.96x = 8,976,357,635.21
  5. Step 5: Solve for x
    x = 8,976,357,635.21/138,102.96
  6. Step 6: Final answer
    x = 64,997.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.